| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 12.27 | 15.39 | 9.79 |
| 2024 | 10.47 | 14.17 | 7.97 |
| 2023 | 7 | 10.35 | 5.57 |
| 2022 | 6.15 | 7.75 | 5 |
| 2021 | 8.1 | 11.25 | 6.7 |
| 2020 | 8.99 | 11.54 | 6.52 |
| 2019 | 7.21 | 10 | 5.64 |
| 2018 | 8.25 | 15.13 | 5.44 |
| 2017 | 15.41 | 23.6 | 9.16 |
| 2016 | 28.1 | 54.62 | 20.86 |
| 2015 | 40.24 | 74.54 | 23.28 |
| 2014 | 24.17 | 31.84 | 20.06 |
| 2013 | 19.73 | 29.9 | 13.39 |
| 2012 | 13.15 | 16.03 | 9.45 |
| 2011 | 14.32 | 17.67 | 10.25 |
| 2010 | 15.38 | 23.3 | 10.51 |
| 2009 | 20.79 | 30.2 | 14.29 |
| 2008 | 18.85 | 38.83 | 8.07 |
| 2007 | 16.16 | 25.83 | 6.67 |
| 2006 | 7.45 | 10.01 | 4.54 |
| 2005 | 4.86 | 6.41 | 3.35 |
| 2004 | 9.58 | 20.3 | 4.87 |